Credits

Analysis by Chrispin Chaguza Experiments by Anna York Sequencing by Jason Rosch and colleagues (St Jude’s) Interactive plots by Dan Weinberger

Serotype 9V background

Parent strain is Serotype 9V ID ABC010001831, obtained from the CDC

Serotype 15B/C background

Parent strain is 15B/C, a carriage isolate from Hungary, ID Pool_hung_H10 (H124)

Serotype 22F background

Parent strain is serotype 22F, ID: ABC010003966, obtained from the CDC (IPD isolate)